I think this is the only glimmer of hope in changing it. There are the Lakers, Heat, Knicks, maybe Nets owners who would be pro-stars moving where they want and then the rest would probably prefer that there be ways for teams to keep their stars.
Parity works for the NFL but that is very much a different sport. A single player has less of an impact on a game as does a basketball player. In the NBA you get your Duncan's, Kobe's, Shaq's, LeBron's every so often and whoever has those guys is winning it. Pistons are the only exception recently. Big time difference makers can be found anywhere in the draft in the NFL. Coaches and their schemes play a much bigger role compared to the NBA. There are different ways to win- look at the Packers, Saints, Giants, Pats, Steelers, Bucs, recent Super Bowl winners. In the NBA you basically have no chance unless you got one of the top 5 players in the league accompanied by another top player or a few all-star types.
Even in the MLB the non-major market teams have a chance because the nature of the game is that young pitching can come up and be just as good as a veteran Cy Young winner. Hitters are less extreme but its a bit of the same. Teams need young talent mixed with veterans to win. In the NBA if 4 or 5 of your 8/9 man rotation are rookies you've got no shot. Its just the nature of the game. Rookies don't come in and lead NBA teams to rings off the bat or win MVP like they used to like Unseld or Wilt. The arbitration system helps teams keep talent but its still sad to see small market teams acknowledging that their best player of the last 8 years is as good as gone once he hits free agency and there isn't much they can do. At least they get compensation and can plan ahead a bit.
The franchise tag and arbitration systems do seem to be a common thread there though. Wonder how that would go in negotiations. The hard cap idea may be somewhat of a method to make the talent more evenly spread. But at the same time I wouldn't be so sure that its a good thing for punishing owners who are willing to go the extra mile to win and letting the shitty owners get talent for no reason.